(Newser)
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As the search resumes for reality star Kristin Cavallari's brother, investigators are examining whether one factor in the 30-year-old's disappearance was his recent arrest on allegations that he acted threateningly toward a woman and had a gun. Michael Cavallari's 2014 Honda Civic was found abandoned 12 days ago in southern Utah. Investigators still don't know where he was headed or what he was doing in Utah. But they're considering all possibilities, including that he doesn't want to be found, Grand County Sheriff Steven White said. That's on their radar because Michael Cavallari was arrested in Southern California on an allegation of making threats four days before he disappeared. He bailed out of jail Nov. 25. Two days later, a rancher discovered the car stuck against a small embankment off a dirt road about 5 miles from Interstate 70. It was running, and the air bag was deployed.

Michael Cavallari hasn't been heard from since. "It's like he just vanished," White said. "It could be that he's hurt and missing, or that he doesn't want to be found." Michael Cavallari's cellphone and laptop were inside the car, but there was no blood or any other sign of foul play. White said two of his deputies have gone to California to gather more information from law enforcement about the Nov. 23 arrest outside Dana Point City Hall, in Orange County. On Tuesday, a team of 30 officers, along with search dogs and drones, fanned out in the desolate area about 200 miles south of Salt Lake City where Cavallari disappeared. Click for more on his arrest. (Read more missing person stories.)